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NABTEB 2022 GENERAL METAL WORK ANSWERS

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GENERAL METAL WORK OBJ
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NABTEB 2022 GENERAL METAL WORK ANSWERS
(2ai)
Ferrous Metals are the materials that are formed by iron and its alloys.
(2aii)
i. Ferrous Metals
ii. Non ferrous metals
(2b)
i. Elasticity: The elasticity of a metal refers to the rate at which a given metal sample is able to distort its size and shape under a range of stress and strain forces and other externally varying factors.
ii. Toughness: The ability of a metal to deform plastically and to absorb energy in the process before fracture is termed toughness.
iii. Malleability: Malleability is a physical property of metals that defines their ability to be hammered, pressed, or rolled into thin sheets without breaking.
vi. Ductility: Ductility is the ability of a material to be drawn or plastically deformed without fracture.
(2ci)
An alloy is a combination of a metal with at least one other metal or nonmetal.
(2cii)
An alloy that does not contain noble metals such as gold or silver.

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